It is understood that Hansom will oversee the gastropub's new 30-cover restaurant space, which will open on its first floor.
The pub revealed earlier this month that it was undergoing a refurbishment, and is yet to confirm when it will reopen post lockdown.
Announcing her new role on Instagram, Hansom said: "I’m so excited to share this news with you all, after months out of the kitchen I can’t wait to get behind the stoves!
"You’ll find me at The Princess of Shoreditch.
"We are working very hard creating a new menu to welcome you back."
Hansom, who was a finalist on this year's series of Great British Menu, was previously head chef at Pomona’s in Notting Hill.
Having joined the restaurant in April last year, she subsequently announced in early March that she was leaving the role and Pomona’s is believed to closed permanently soon afterwards.
Prior to that, Hansom was head chef at the Luton Hoo hotel in Bedfordshire; and before that spent five years at The Ritz London, during which time she became the first ever female winner of Young National Chef of the Year (YNCOTY).
In 2018 she appeared on My Million Pound Menu alongside Ritz sommelier Emily Lambert and received a £750,000 - £1m investment from chef Atul Kochhar towards the opening of their British fine dining concept Epoch.
After the show the pair ran a series of pop-ups and private dinners, but it was later announced that permanent plans for Epoch would not be going ahead.